Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bf787a4cefaf253…

MALICIOUS

PDF

149.7 KB Created: 2021-03-14 17:32:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6498ff6bff833c199a6c068a7661b570 SHA-1: 5b95d9f212cf909a118cdf8a772d7f2fb0958615 SHA-256: 6bf787a4cefaf2531e5d82d8b58d2a3d120f24659910f19f12b8b6a591168f96
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URI pointing to a suspicious domain, 'ponafet.ru', which is flagged as external and potentially malicious. ML and ClamAV heuristics strongly indicate malicious content, specifically classifying it as a phishing trojan. The document body, though heavily obfuscated, contains text that appears to be a lure related to a script or guide, reinforcing the phishing or malware distribution intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9957

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ponafet.ru/wix?keyword=catch+me+if+you+can+full+script+pdf
    • https://cdn.sqhk.co/xixujipum/AwjjifH/the_chosen_ones_book_review.pdf
    • https://cdn.sqhk.co/pijajawopoji/gsih3ib/63316613096.pdf
    • https://static.s123-cdn-static.com/uploads/4384142/normal_5fcd302d05c31.pdf
    • https://cdn.sqhk.co/bulegumu/uigvQje/83579373811.pdf
    • https://cdn-cms.f-static.net/uploads/4454424/normal_604d24821c3bb.pdf
    • https://cdn-cms.f-static.net/uploads/4478387/normal_5fd8797381d6e.pdf
    • https://cdn.sqhk.co/givifevulo/gkhcDhf/16040706164.pdf
    • https://cdn-cms.f-static.net/uploads/4416143/normal_602c023dc7c61.pdf
    • https://cdn-cms.f-static.net/uploads/4424985/normal_60412cc2cddb4.pdf
    • https://cdn.sqhk.co/doporaba/whaO8di/75666564639.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/goviwigax/maplestory_m_guide_cygnus_knights.pdf
    • https://s3.amazonaws.com/nedijowewoded/91233330937.pdf
    • https://s3.amazonaws.com/jesidofefe/guniruduwizonefetimokofak.pdf
    • https://s3.amazonaws.com/kifutizijebuj/27957354193.pdf
    • https://s3.amazonaws.com/legesiliv/confessions_st_augustine_best_translation.pdf
    • https://s3.amazonaws.com/setigafat/bawufizesewipudatetino.pdf
    • https://uploads.strikinglycdn.com/files/d7a4a58f-45c6-49e6-a925-2c31b558d204/family_feud_game_download_powerpoint.pdf
    • https://s3.amazonaws.com/mudurixo/51822676388.pdf
    • https://s3.amazonaws.com/tofizo/google_dmarc_report_id.pdf
    • https://s3.amazonaws.com/tiluwisulepam/vesolotileko.pdf
    • https://s3.amazonaws.com/ganubatebedoxez/godabadobivojexabufoso.pdf
    • https://s3.amazonaws.com/xiwevitox/allied_telesis_software.pdf
    • https://uploads.strikinglycdn.com/files/afa221b9-7480-42f5-8a46-da52b182e8b4/what_is_the_meaning_behind_the_chickens_come_home_to_roost.pdf
    • https://s3.amazonaws.com/resisuna/blog_de_superheroes_reportajes.pdf
    • https://s3.amazonaws.com/jevelel/xutusarijolujivomulo.pdf
    • https://uploads.strikinglycdn.com/files/b03d96c6-9334-4502-8bc6-ce8a90a7aafb/34536212571.pdf
    • https://s3.amazonaws.com/baxunaf/awesome_photography_logo_templates.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00021132.bin
8ae3a12f62167e76f61d5d44bdbbd5b4e2ab2dc0c2e0c173d9889f05769a868a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x21132 5404 bytes
font_01_sfnt_off0002236e.bin
120bc73d41285832551205b6bb71a49caa72b95e4064cff0fb9e3a811f160fc1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2236E 10880 bytes

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